mirror of
https://github.com/TryGhost/Ghost.git
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356 lines
13 KiB
JavaScript
356 lines
13 KiB
JavaScript
/**
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* Main controller for Ghost frontend
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*/
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/*global require, module */
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var moment = require('moment'),
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RSS = require('rss'),
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_ = require('lodash'),
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url = require('url'),
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when = require('when'),
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Route = require('express').Route,
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api = require('../api'),
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config = require('../config'),
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filters = require('../../server/filters'),
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template = require('../helpers/template'),
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frontendControllers,
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// Cache static post permalink regex
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staticPostPermalink = new Route(null, '/:slug/:edit?');
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function getPostPage(options) {
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return api.settings.read('postsPerPage').then(function (postPP) {
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var postsPerPage = parseInt(postPP.value, 10);
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// No negative posts per page, must be number
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if (!isNaN(postsPerPage) && postsPerPage > 0) {
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options.limit = postsPerPage;
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}
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return api.posts.browse(options);
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}).then(function (page) {
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// A bit of a hack for situations with no content.
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if (page.meta.pagination.pages === 0) {
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page.meta.pagination.pages = 1;
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}
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return page;
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});
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}
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function formatPageResponse(posts, page) {
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return {
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posts: posts,
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pagination: page.meta.pagination
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};
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}
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function handleError(next) {
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return function (err) {
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var e = new Error(err.message);
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e.status = err.code;
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return next(e);
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};
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}
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frontendControllers = {
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'homepage': function (req, res, next) {
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// Parse the page number
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var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
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options = {
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page: pageParam
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};
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// No negative pages, or page 1
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if (isNaN(pageParam) || pageParam < 1 || (pageParam === 1 && req.route.path === '/page/:page/')) {
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return res.redirect(config().paths.subdir + '/');
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}
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return getPostPage(options).then(function (page) {
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// If page is greater than number of pages we have, redirect to last page
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if (pageParam > page.meta.pagination.pages) {
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return res.redirect(page.meta.pagination.pages === 1 ? config().paths.subdir + '/' : (config().paths.subdir + '/page/' + page.meta.pagination.pages + '/'));
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}
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// Render the page of posts
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filters.doFilter('prePostsRender', page.posts).then(function (posts) {
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res.render('index', formatPageResponse(posts, page));
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});
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}).otherwise(handleError(next));
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},
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'tag': function (req, res, next) {
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// Parse the page number
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var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
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options = {
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page: pageParam,
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tag: req.params.slug
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};
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// Get url for tag page
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function tagUrl(tag, page) {
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var url = config().paths.subdir + '/tag/' + tag + '/';
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if (page && page > 1) {
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url += 'page/' + page + '/';
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}
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return url;
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}
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// No negative pages, or page 1
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if (isNaN(pageParam) || pageParam < 1 || (req.params.page !== undefined && pageParam === 1)) {
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return res.redirect(tagUrl(options.tag));
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}
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return getPostPage(options).then(function (page) {
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// If page is greater than number of pages we have, redirect to last page
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if (pageParam > page.meta.pagination.pages) {
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return res.redirect(tagUrl(options.tag, page.meta.pagination.pages));
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}
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// Render the page of posts
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filters.doFilter('prePostsRender', page.posts).then(function (posts) {
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api.settings.read('activeTheme').then(function (activeTheme) {
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var paths = config().paths.availableThemes[activeTheme.value],
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view = paths.hasOwnProperty('tag.hbs') ? 'tag' : 'index',
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// Format data for template
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response = _.extend(formatPageResponse(posts, page), {
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tag: page.aspect.tag
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});
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res.render(view, response);
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});
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});
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}).otherwise(handleError(next));
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},
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'single': function (req, res, next) {
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var path = req.path,
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params,
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editFormat,
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usingStaticPermalink = false;
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api.settings.read('permalinks').then(function (permalink) {
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editFormat = permalink.value[permalink.value.length - 1] === '/' ? ':edit?' : '/:edit?';
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// Convert saved permalink into an express Route object
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permalink = new Route(null, permalink.value + editFormat);
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// Check if the path matches the permalink structure.
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//
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// If there are no matches found we then
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// need to verify it's not a static post,
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// and test against that permalink structure.
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if (permalink.match(path) === false) {
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// If there are still no matches then return.
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if (staticPostPermalink.match(path) === false) {
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// Throw specific error
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// to break out of the promise chain.
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throw new Error('no match');
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}
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permalink = staticPostPermalink;
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usingStaticPermalink = true;
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}
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params = permalink.params;
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// Sanitize params we're going to use to lookup the post.
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var postLookup = _.pick(permalink.params, 'slug', 'id');
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// Query database to find post
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return api.posts.read(postLookup);
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}).then(function (result) {
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var post = result.posts[0],
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slugDate = [],
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slugFormat = [];
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if (!post) {
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return next();
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}
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function render() {
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// If we're ready to render the page but the last param is 'edit' then we'll send you to the edit page.
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if (params.edit === 'edit') {
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return res.redirect(config().paths.subdir + '/ghost/editor/' + post.id + '/');
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} else if (params.edit !== undefined) {
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// Use throw 'no match' to show 404.
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throw new Error('no match');
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}
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filters.doFilter('prePostsRender', post).then(function (post) {
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api.settings.read('activeTheme').then(function (activeTheme) {
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var paths = config().paths.availableThemes[activeTheme.value],
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view = template.getThemeViewForPost(paths, post);
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res.render(view, {post: post});
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});
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});
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}
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// If we've checked the path with the static permalink structure
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// then the post must be a static post.
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// If it is not then we must return.
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if (usingStaticPermalink) {
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if (post.page === 1) {
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return render();
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}
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return next();
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}
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// If there is any date based paramter in the slug
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// we will check it against the post published date
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// to verify it's correct.
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if (params.year || params.month || params.day) {
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if (params.year) {
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slugDate.push(params.year);
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slugFormat.push('YYYY');
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}
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if (params.month) {
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slugDate.push(params.month);
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slugFormat.push('MM');
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}
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if (params.day) {
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slugDate.push(params.day);
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slugFormat.push('DD');
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}
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slugDate = slugDate.join('/');
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slugFormat = slugFormat.join('/');
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if (slugDate === moment(post.published_at).format(slugFormat)) {
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return render();
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}
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return next();
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}
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render();
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}).otherwise(function (err) {
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// If we've thrown an error message
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// of 'no match' then we found
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// no path match.
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if (err.message === 'no match') {
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return next();
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}
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return handleError(next)(err);
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});
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},
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'rss': function (req, res, next) {
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// Initialize RSS
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var pageParam = req.params.page !== undefined ? parseInt(req.params.page, 10) : 1,
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tagParam = req.params.slug;
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// No negative pages, or page 1
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if (isNaN(pageParam) || pageParam < 1 ||
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(pageParam === 1 && (req.route.path === '/rss/:page/' || req.route.path === '/tag/:slug/rss/:page/'))) {
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if (tagParam !== undefined) {
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return res.redirect(config().paths.subdir + '/tag/' + tagParam + '/rss/');
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} else {
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return res.redirect(config().paths.subdir + '/rss/');
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}
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}
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return when.settle([
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api.settings.read('title'),
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api.settings.read('description'),
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api.settings.read('permalinks')
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]).then(function (result) {
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var options = {};
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if (pageParam) { options.page = pageParam; }
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if (tagParam) { options.tag = tagParam; }
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return api.posts.browse(options).then(function (page) {
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var title = result[0].value.value,
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description = result[1].value.value,
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permalinks = result[2].value,
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siteUrl = config.urlFor('home', null, true),
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feedUrl = config.urlFor('rss', null, true),
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maxPage = page.meta.pagination.pages,
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feedItems = [],
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feed;
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if (tagParam) {
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title = page.aspect.tag.name + ' - ' + title;
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feedUrl = feedUrl + 'tag/' + page.aspect.tag.slug + '/';
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}
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feed = new RSS({
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title: title,
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description: description,
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generator: 'Ghost v' + res.locals.version,
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feed_url: feedUrl,
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site_url: siteUrl,
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ttl: '60'
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});
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// A bit of a hack for situations with no content.
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if (maxPage === 0) {
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maxPage = 1;
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page.meta.pagination.pages = 1;
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}
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// If page is greater than number of pages we have, redirect to last page
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if (pageParam > maxPage) {
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if (tagParam) {
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return res.redirect(config().paths.subdir + '/tag/' + tagParam + '/rss/' + maxPage + '/');
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} else {
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return res.redirect(config().paths.subdir + '/rss/' + maxPage + '/');
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}
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}
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filters.doFilter('prePostsRender', page.posts).then(function (posts) {
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posts.forEach(function (post) {
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var deferred = when.defer(),
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item = {
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title: post.title,
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guid: post.uuid,
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url: config.urlFor('post', {post: post, permalinks: permalinks}, true),
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date: post.published_at,
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categories: _.pluck(post.tags, 'name'),
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author: post.author ? post.author.name : null
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},
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content = post.html;
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//set img src to absolute url
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content = content.replace(/src=["|'|\s]?([\w\/\?\$\.\+\-;%:@&=,_]+)["|'|\s]?/gi, function (match, p1) {
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/*jslint unparam:true*/
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p1 = url.resolve(siteUrl, p1);
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return "src='" + p1 + "' ";
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});
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//set a href to absolute url
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content = content.replace(/href=["|'|\s]?([\w\/\?\$\.\+\-;%:@&=,_]+)["|'|\s]?/gi, function (match, p1) {
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/*jslint unparam:true*/
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p1 = url.resolve(siteUrl, p1);
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return "href='" + p1 + "' ";
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});
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item.description = content;
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feed.item(item);
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deferred.resolve();
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feedItems.push(deferred.promise);
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});
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});
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when.all(feedItems).then(function () {
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res.set('Content-Type', 'text/xml');
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res.send(feed.xml());
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});
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});
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}).otherwise(handleError(next));
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}
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};
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module.exports = frontendControllers;
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